Representing prosodic words using statistical models of moraic transition of fundamental frequency contours of Japanese
نویسندگان
چکیده
We have formerly proposed a statistical model of moraic transitions of fundamental frequency (F0) contours and showed its e ectiveness for prosodic boundary detection and accent type recognition. This model represented F0 contours of prosodic words to simultaneously detect and recognize prosodic word boundaries and accent types. This paper proposes a method where prosodic word F0 contours are modeled separately according to their accent types and presence/absence of succeeding pauses. An utterance is regarded as a sequence of prosodic words under a simple grammar. Each moraic F0 contour is represented by a pair of codes; the original shape code and the newly introduced delta code representing the degree of F0 change between the mora in question and its preceding mora. Compared with earlier results, the boundary detection rate inproves from 87.7 % to 91.5 %. Accent type recognition rate reached 76.0 % (type 1 accent discrimination).
منابع مشابه
A method of representing fundamental frequency contours of Japanese using statistical models of moraic transition
A statistical modeling of voice fundamental frequency contours was proposed for the purpose of developing effective ways to utilize prosodic features in speech recognition. In view of the fact that prosodic features should be treated in longer units, the proposed modeling represents the transition in moraic units. A fundamental frequency contour was rst segmented into moraic units and then each...
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